Programming Structures and Syntax

### Creating properties and active properties

You can create properties explicitly by extending the type constructor prototype. Alternatively, you can use the built-in functionality and create properties using the **ImplementProperty** or **ImplementActiveProperty** methods. 

The **ImplementProperty** and **ImplementActiveProperty** methods are used to create pseudo-properties on any class or interface. When one of these methods is used, a *getter* and *setter* functions are attached to the constructor prototype. For example, the following code:
```javascript	
function SomeClass(){}
SomeClass.ImplementProperty("nameOfProperty", objectInitializer);		
```  
will add the following to the prototype of **SomeClass**:
* A getter function `SomeClass.prototype.set_nameOfProperty(value)`;
* A setter function `SomeClass.prototype.get_nameOfProperty()`;
* The actual property `SomeClass.prototype.$nameOfProperty`;
 
In addition, when **ImplementActiveProperty** is used, an event with the name **nameOfProperty_changed** is registered for the specific type. Every time the property value changes, the event will be triggered. The user can attach additional functionality as a handler to the event.

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<!-- The DataHolder class -->



<!-- The Base class -->

<!-- Base.prototype.bindings = new Array(); Base.prototype.handlers = new Array(); Base.prototype.lookups Base.prototype.set_data & get_data Base.prototype.childObject() Base.prototype.findParent() Base.prototype.findService()-->



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<!-- The BaseWindow class -->

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